If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is )/(1 + sin )]_________________?

h W/Aw) [(1 – )/(1 + sin )]²

h = (W/Aw) [(1 – )/(1 + sin )]²

If A is the area of the foundation of a retaining wall carrying a load

1.	If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is )/(1 + sin )]_________________?
A.	h = (W/Aw) [(1 –
B.	h = (W/Aw) [(1 + )/(1 + sin )]
C.	h = (W/Aw) [(1 – )/(1 + sin )]²
D.	h W/Aw) [(1 – )/(1 + sin )]²
Answer» D. h W/Aw) [(1 – )/(1 + sin )]²

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